[vtkusers] vtkCellLocator tolerance

[luca]

I am trying to compute ray to polydata intersections using the cell locator.

I noticed there is a systematic discrepancy between the returned 
intersection and the actual one. I tried reducing the "tol" parameter 
without success. Is there something I am missing?
Here is a snapshot of the found intersections (red spheres) and the rays 
entering the (white) surface of the polydata.

Any hint on this?

Luca


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